20172068440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1\times {\mathrm{263}}^1$

素因数の和:697

約数の個数: 128

約数和(自身を含む): 46805299200

約数和(自身を除く): 26633230760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 113, 142, 226, 239, 263, 284, 355, 452, 478, 526, 565, 568, 710, 904, 956, 1052, 1130, 1195, 1315, 1420, 1912, 2104, 2260, 2390, 2630, 2840, 4520, 4780, 5260, 8023, 9560, 10520, 16046, 16969, 18673, 27007, 29719, 32092, 33938, 37346, 40115, 54014, 59438, 62857, 64184, 67876, 74692, 80230, 84845, 93365, 108028, 118876, 125714, 135035, 135752, 148595, 149384, 160460, 169690, 186730, 216056, 237752, 251428, 270070, 297190, 314285, 320920, 339380, 373460, 502856, 540140, 594380, 628570, 678760, 746920, 1080280, 1188760, 1257140, 1917497, 2110049, 2514280, 3834994, 4220098, 4462847, 7102841, 7669988, 8440196, 8925694, 9587485, 10550245, 14205682, 15339976, 16880392, 17851388, 19174970, 21100490, 22314235, 28411364, 35514205, 35702776, 38349940, 42200980, 44628470, 56822728, 71028410, 76699880, 84401960, 89256940, 142056820, 178513880, 284113640, 504301711, 1008603422, 2017206844, 2521508555, 4034413688, 5043017110, 10086034220, 20172068440]

約数ペア:

[(1, 20172068440), (2, 10086034220), (4, 5043017110), (5, 4034413688), (8, 2521508555), (10, 2017206844), (20, 1008603422), (40, 504301711), (71, 284113640), (113, 178513880), (142, 142056820), (226, 89256940), (239, 84401960), (263, 76699880), (284, 71028410), (355, 56822728), (452, 44628470), (478, 42200980), (526, 38349940), (565, 35702776), (568, 35514205), (710, 28411364), (904, 22314235), (956, 21100490), (1052, 19174970), (1130, 17851388), (1195, 16880392), (1315, 15339976), (1420, 14205682), (1912, 10550245), (2104, 9587485), (2260, 8925694), (2390, 8440196), (2630, 7669988), (2840, 7102841), (4520, 4462847), (4780, 4220098), (5260, 3834994), (8023, 2514280), (9560, 2110049), (10520, 1917497), (16046, 1257140), (16969, 1188760), (18673, 1080280), (27007, 746920), (29719, 678760), (32092, 628570), (33938, 594380), (37346, 540140), (40115, 502856), (54014, 373460), (59438, 339380), (62857, 320920), (64184, 314285), (67876, 297190), (74692, 270070), (80230, 251428), (84845, 237752), (93365, 216056), (108028, 186730), (118876, 169690), (125714, 160460), (135035, 149384), (135752, 148595)]